status_t vmi_translate_uv2p (vmi_instance_t vmi, addr_t virt_address, vmi_pid_t pid, addr_t *paddr)
{
status_t ret = VMI_FAILURE;
addr_t dtb = 0;
if ( VMI_FAILURE == vmi_pid_to_dtb(vmi, pid, &dtb) || !dtb ) {
dbprint(VMI_DEBUG_PTLOOKUP, "--early bail on v2p lookup because dtb not found\n");
return VMI_FAILURE;
}
ret = vmi_pagetable_lookup_cache(vmi, dtb, virt_address, paddr);
if ( VMI_FAILURE == ret) {
if ( VMI_FAILURE == pid_cache_del(vmi, pid) )
return VMI_FAILURE;
ret = vmi_pid_to_dtb(vmi, pid, &dtb);
if (VMI_SUCCESS == ret) {
page_info_t info = {0};
/* _extended() skips the v2p_cache lookup that must have already failed */
ret = vmi_pagetable_lookup_extended(vmi, dtb, virt_address, &info);
if ( VMI_SUCCESS == ret )
*paddr = info.paddr;
}
}
return ret;
}
addr_t vmi_translate_uv2p (vmi_instance_t vmi, addr_t virt_address, vmi_pid_t pid)
{
addr_t paddr = 0;
addr_t dtb = vmi_pid_to_dtb(vmi, pid);
if (!dtb) {
dbprint(VMI_DEBUG_PTLOOKUP, "--early bail on v2p lookup because dtb is zero\n");
return 0;
}
if (VMI_SUCCESS != vmi_pagetable_lookup_cache(vmi, dtb, virt_address, &paddr)) {
if ( VMI_FAILURE == pid_cache_del(vmi, pid) )
return 0;
dtb = vmi_pid_to_dtb(vmi, pid);
if (dtb) {
page_info_t info = {0};
/* _extended() skips the v2p_cache lookup that must have already failed */
if (VMI_SUCCESS == vmi_pagetable_lookup_extended(vmi, dtb, virt_address, &info)) {
paddr = info.paddr;
}
}
}
return paddr;
}
/* expose virtual to physical mapping for user space via api call */
addr_t vmi_translate_uv2p_nocache (vmi_instance_t vmi, addr_t virt_address,
vmi_pid_t pid)
{
addr_t dtb = vmi_pid_to_dtb(vmi, pid);
if (!dtb) {
dbprint(VMI_DEBUG_PTLOOKUP, "--early bail on v2p lookup because dtb is zero\n");
return 0;
}
else {
addr_t rtnval = vmi_pagetable_lookup(vmi, dtb, virt_address);
if (!rtnval) {
pid_cache_del(vmi, pid);
}
return rtnval;
}
}
